10g of nacl is dissolved in 10^6g of the solution. It's concentration is..........

A) .1ppm

B) .01ppm

C) 10ppm

D) 1ppm

Dear Student

Mass of solute = 10 grams​ = 10⁴ mg
Mass of solution = 10⁶ grams​​​​​​ 
Let the density of solution = 1 gmL^-1 (assuming the solution to be aqueous)
Volume of solution = mass/density = 10⁶/1 mL = 10 ³ L

ppm = mgL^-1 = 10⁴/10³ = 10ppm

Regards